Ball-cock.



E. S. STA-GK.

BALL 000K. APPLICATION Hum JAN. 6, 190a.

Patented Sept. 28, 1909.

mazw, a. mums w. Fumoumocmmuzns. WASHKNGTON. n c.

ELMEB. S. $TACK, OF SOMERVILLE, IIIASSACHUSETTS.

BALL-COCK.

Application filed January 6, 1909.

Specification of Letters Patent.

Patent-ed Sept. 28, 1909.

Serial No. 470,951.

To all whom it may concern:

Be it known that I, ELMER S. STACK, of Somerville, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Ball- Qocks, of which the following is aspecification.

This invention has relation to valves for controlling liquid underpressure, and its chief object is to provide a valve adapted toopenpromptly in response to the actuating force and to overcome liability ofleakage when closed. Incidentally to this feature, the invention seeksto provide a valve involving a comparatively small expense ofmanufacture by omitting a stuffing box for the valve stem and otherwisepreventing the leakage of fluid from the valve casing when the valve isopen. The construction and arrangement of the valve are such that oneand the same means causes the three results mentioned, namely,promptness in opening, completeness of closing, and freedom from leakagepast the valve stem. A valve so constructed is adapted to a variety offorms, among which are ball cocks and basin cocks or bibbs, the firstnamed form being operated by a float, and the others by manual pressure.

Of the accompanying drawings, which illustrate a form adapted to beoperated by a float,Figure 1 represents a vertical section of areservoir equipped with a valve or cook constructed in accordance withthis in vention. Fig. 2 is a longitudinal section showing the valve on alarger scale and in closed position. Fig. 3 is a section on the line 38of Fig. 2. Fig. t is a section on the line 44 of Fig. 2.

The same reference characters indicate the same parts wherever theyoccur.

The numeral 10 indicates a reservoir such as a flush tank intended tocontain a supply of water at a constant level.

11 indicates a supply pipe for water under suitable pressure, and 12indicates the casing of a valve or cock for controlling the supply ofwater.

13 indicates a float by which the Water supply in the tank is enabled tooperate the valve.

The casing 12 is formed with a valve chamber 14: at one end of which thesupply pipe is coupled with an inlet or valve seat 15. At the other endof the chamber is an outlet nozzle 16 extending laterally or downwardly,as the case may be. The outlet of the chamber is greater in diameterthan the main body, and the juncture of the two is marked by a. sharplydefined shoulder 17.

18 indicates a valve stem which extends through the casing 12 and whichhas a bearing at 19. The inner end of the stem is formed with a spider20 (see Fig. 3) which bears against the wall of the chamber, and whichcarries a valve 21 in the form of a washer, which is adapted to seatupon the inlet 15. The outer end of the stem 18 has an extension 22 withoppositely extending pins or pro ections 23. The extension isbestraddled by two toes of a bifurcated lever 24 which is mounted uponan car 25 formed on the casing 12. The ear is provided with a pluralityof apertures 26, into any one of which is inserted a. fulcrum pin 27 forthe lever. The lever has a plurality of apertures for the same purpose,which, in Fig. 2, register with the apertures 26. The lever has ascrew-threaded socket in which one end of a float rod 28 is inserted andsecured by means of a thumb screw 29. The toes of the lever are confinedbetween the projections 23 and a shoulder 30 on the valve stem, but areconstantly held in contact with the shoulder by the buoyancy of thefloat on the one side and the pressure against the valve on the other.

The closed position of the valve is indi cated by full lines in Fig. 2while the open position is indicated by dotted lines. The recedingmovement of the valve is limited by a stop 31 in the path of theshoulder 30. \Vhen the valve is open, the supply flows through thechamber l t but is retarded by a disk 32 formed on or otherwise made apart of the stem 18. The disk is slightly less in diameter than thechamber and is preferably inclined relatively to the shoulder 17. Inthis form, however, the disk is perpendicular and the shoulder inclinedto the path of movement of the valve. The disk is so positioned as toenter the outlet end of the chamber 14 only when the valve is againstits seat, and to afford about one half of the full opening when thevalve is farthest from its seat.

Then the valve is open, the disk deflects the greater part of the watertoward the mouth of the nozzle 16 and thus causes an ejecting actionwhich draws out the water which flows between the opposite edge of thedisk and the casing 12. In this way, the entire supply of water isdischarged by way of the nozzle instead of leaking between the bearing19 and valve stem.

By providing a plurality of apertures for the fulcrum 27, the cock isadapted to operate with various pressures of water. For a high pressure,the movement of the valve should be decreased by placing the fulcrum inthe aperture nearest the valve stem, while for a low pressure, themovement should be correspondingly increased by placing the fulcrumfarther from the stem. The simplicity of construction of the cockreduces the cost of manufacture to an extremely low point, and avoidsthe liability of becoming disarranged, but at the same time provides along bearing for the valve mechanism and smooth connection with theoperating lever.

Having thus explained the nature of my said invention, and described away of making and using the same, although without attempting to setforth all of the forms in which it may be made or all of the modes ofits use, what I claim is:

1. A cock comprising a casing formed with an inlet, an outlet, and aunitary passage from the inlet to the outlet, an inlet valve, and meansmovable with the valve for causing an ejecting action at the outlet.

2. A cock comprising a casing provided with an inlet and an outlet, aninlet valve, and means movable between the inlet and outlet for varyingthe flow and for causing an ejecting action at the outlet.

3. A cock comprising a chamber provided with an outlet terminating withan abrupt shoulder, and a disk inclined relatively to the shoulder andmovable into and out of the end of the chamber.

l. A cock comprising a chamber having an inlet and an outlet, a valvefor the inlet, and means for variably obstructing the outlet, said valveand means being movable so as to open in the direction of flow.

5. A cock comprising a chamber having an inlet and an outlet, an inletvalve opening with the flow, and means coupled with the inlet valve andmovable in unison therewith for variably obstructing the outlet.

In testimony whereof I have affixed my signature, in presence of twowitnesses.

ELMER S. STACK. Witnesses E. BATCHELDER, P. V. PEZZETTI.

